Pentair C3-184P Seal Plate Replacement Dyna Series Pool and Spa Pump Seal plate replacement Fits Pentair Sta-Rite Dyna-Glas/Dyna-Max Series pool and spa pumps Also fits Sta-Rite Dyna-Wave and TPE Dyna-Jet Series pool and spa pump Measures 10-1/2-inch length by 10-1/2-inch width by 3-inch height